Results 21 to 30 of about 24,784 (188)
The Hour that Never Comes and the Time that Remains
Journal of Analytical Psychology, EarlyView.Abstract This essay proposes a symbolic and clinical investigation of psychic temporality through two archetypal experiences of time: the hour that never comes and the time that remains. Drawing on analytical psychology, trauma theory and aesthetic philosophy, text explores how certain forms of suffering resist chronological resolution and persist as ...
Daniel Françoli Yago
wiley +1 more source
Application of PID and switching in airship station-keeping and traffic flow [PDF]
, 2016 本文受国家自然科学基金课题“高空长航时定点飞艇基于特征模型的鲁棒 自适应控制”（61273199）和福建省自然科学基金课题“数据驱动的高空飞艇 飞行切换控制”（2016J01317）资助。 本文研究了平流层飞艇水平定点稳定和交通流瓶颈路段车流量控制。前者 是实现平流层飞艇长期驻空工作的一项关键技术，而后者有助于建立更加先进 的智能交通系统，解决城市交通拥堵问题，改善和提高居民生活水平。 本文主要研究这两类切换系统的稳定性。针对平流层定点稳定问题，研究 了一类对象连续，控制规则不唯一的切换系统 ...
乔继辉
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Conservation Biology, EarlyView.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
Automating the analysis of public saliency and attitudes toward biodiversity from digital media
Conservation Biology, EarlyView.Abstract Measuring public attitudes toward wildlife provides crucial insights into human relationships with nature and helps monitor progress toward Global Biodiversity Framework targets. Yet, conducting such assessments at a global scale presents challenges.
Noah Giebink +8 more
wiley +1 more source
Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, EarlyView.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
Shiyou jixie, 2015 针对钻井过程中循环钻井液流量控制不准确，造成螺杆钻具旁通阀总成无法开启闭合，阀心密封件失效刺漏等问题，通过φ244 mm等壁厚螺杆钻具旁通阀理论计算和循环试验，验证旁通阀工作可靠性。测得φ244 mm等壁厚螺杆钻具旁通阀关闭流量和开启流量；测得不同流量下旁通阀压降，确定阀心实际流量系数。分析结果表明，φ244 mm等壁厚螺杆钻具旁通阀在不同流量下产生的压差与循环试验获得压差十分接近，并且旁通阀在一定流量下均能实现阀心顺利打开和关闭。当流量由大变小时，阀心打开流量为20.20～14.60 L/s ...
张强 +4 more
doaj
Defining and identifying relevant stakeholders to advance effective conservation
Conservation Biology, EarlyView.The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher +5 more
wiley +1 more source
Gaoya dianqi, 2023 为了提高模块化多电平变流器MMC(modular multilevel converter)的稳定性与动态性能，实现环流抑制，提出基于交流电流和环流双目标调节的无差拍控制。通过MMC单相等效电路的动态方程，设计MMC交流电流分量以及环流分量的无差拍电流预测控制器，并针对实际控制存在的时延问题进行理论分析提出改进措施。通过搭建无差拍控制下模块化多电平变流器的十电平Simulink仿真模型，验证控制策略的有效性。结果表明：通过无差拍控制可以显著提高模块化多电平变流器的稳态和动态性能 ...
赵峰 +5 more
doaj
Design and Implementation of Traffic Jam Status System Based On JAVA [PDF]
, 2016 摘要 随着城市经济的发展，车辆剧增，出现的交通阻塞、交通事故发生频率高，交通环境污染，交通治安混乱等一系列问题，严重影响着当前城市经济的发展和人民的生活，而同时交通设施的建设存在普遍滞后的状况，解决这些问题是当前所需，也是刻不容缓的。通过建设智能道路交通管理系统，运用科学化、现代化的交通管理手段提升道路交通管理服务水平，实现交通管理“智能化”，将极大地提高交通管理的效率，满足城市交通可持续发展的需要。 第一代交通自动管理系统采用无线遥感、红外、雷达等方式来获取环境信息。并传达给指挥人员 ...
文静
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Using customs data to understand overlooked trade in non‐CITES birds between Africa and Asia
Conservation Biology, EarlyView.Abstract The international trade in live birds poses risks to animals, people, and biodiversity. To effectively mitigate these risks, decision‐makers require information on the volume, dynamics, and direction of trade. Despite Africa once being the largest exporter of birds by region, very little data exist on recent trade in live birds not listed on ...
Alisa Davies +4 more
wiley +1 more source